Search for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at root s=8 TeV

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dc.WoS.categoriesPhysics, Particles & Fieldsen_US
dc.authorid0000-0002-9007-8260en_US
dc.contributor.authorYetkin, Elif Aslı
dc.date.accessioned2021-03-03T13:15:46Z
dc.date.available2021-03-03T13:15:46Z
dc.date.issued2017-02-15
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümüen_US
dc.description.abstractA search is performed for Higgs-boson-mediated flavor-changing neutral currents in the decays of top quarks. The search is based on proton-proton collision data corresponding to an integrated luminosity of 19.7 fb(-1) at a center-of-mass energy of 8 TeV collected with the CMS detector at the LHC. Events in which a top quark pair is produced with one top quark decaying into a charm or up quark and a Higgs boson (H), and the other top quark decaying into a bottom quark and a W boson are selected. The Higgs boson in these events is assumed to subsequently decay into either dibosons or difermions. No signi fi cant excess is observed above the expected standard model background, and an upper limit at the 95% con fi dence level is set on the branching fraction B (t -> Hc) of 0.40% and B (t -> Hu) of 0.55%, where the expected upper limits are 0.43% and 0.40%, respectively. These results correspond to upper limits on the square of the flavor-changing Higgs boson Yukawa couplings vertical bar lambda(H)(tc)vertical bar(2) < 6 . 9 x 10(-3) and vertical bar lambda(H)(tu)vertical bar(2) < 9 . 8 x 10(-3).en_US
dc.fullTextLevelFull Texten_US
dc.identifier.doi10.1007/JHEP02(2017)079
dc.identifier.scopus2-s2.0-85013937924en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.urihttps://hdl.handle.net/11411/3336
dc.identifier.urihttps://doi.org/10.1007/JHEP02(2017)079
dc.identifier.wosWOS:000395128300001en_US
dc.identifier.wosqualityQ1en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.issue2en_US
dc.language.isoenen_US
dc.nationalInternationalen_US
dc.numberofauthors200+en_US
dc.publisherSPRINGERen_US
dc.relation.ispartofJOURNAL OF HIGH ENERGY PHYSICSen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectFlavour Changing Neutral Currentsen_US
dc.subjectHadron-Hadron scattering (experiments)en_US
dc.subjectTop physicsen_US
dc.subjectHiggs physicsen_US
dc.titleSearch for top quark decays via Higgs-boson-mediated flavor-changing neutral currents in pp collisions at root s=8 TeV
dc.typeArticle

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